CN103372495A - Coarse slime separating system and method - Google Patents
Coarse slime separating system and method Download PDFInfo
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- CN103372495A CN103372495A CN2012101069842A CN201210106984A CN103372495A CN 103372495 A CN103372495 A CN 103372495A CN 2012101069842 A CN2012101069842 A CN 2012101069842A CN 201210106984 A CN201210106984 A CN 201210106984A CN 103372495 A CN103372495 A CN 103372495A
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Abstract
The invention discloses a coarse slime separating system and method, belongs to the field of coal separation, and particularly adaptable to direct separation of whole low-concentration slime water in the process of jigging coal separation. The system comprises a water power separating device, a feeding pump, a hydrocyclone, a dewatering device and a flotation device. Rough separation is performed on low-concentration slime water through the water power separating device, concentrated underflow of the water power separating device is separated through the hydrocyclone. By the aid of the coarse slime separating system and method, the whole low-concentration slime water can be separated directly, cost is reduced, system links are simplified, total system investment is reduced, and simple and practical effect that the existing coarse slime separating method cannot achieved is obtained.
Description
Affiliated technical field
The present invention relates to a kind of slime separation system and method for separating, especially relate to a kind of separation of coarse slime system and method for separating for separation of coarse slime.
Background technology
At present, both at home and abroad in the separation of coarse slime method commonly used, mainly contain TBS, water-only cyclone, spiral etc., wherein use maximum TBS, adopt ascending current as sorting power minute choosing, need add flood pattern, the sorting particle size fraction generally between 0.3～2mm, has higher requirement to pan feeding concentration, conventional dewatering screen backwater feeds in this equipment after need to concentrating through cyclone again, and follow-up dehydration link is comparatively complicated, and whole system needs certain discrepancy in elevation, and system's investment is larger, limit the little enterprise of a part of capital quantity and selected this kind method, and in actual production, this method for separating operation easier is large, and equipment is difficult for regulating; Water-only cyclone is to utilize the difference of different densities coal slime particle moving radius under centrifugal action to realize sorting, the method system is comparatively simple, invest less, easy and simple to handle, size range of separation is wide, can reach 0.5～5mm, but in actual production, when pan feeding concentration is low, separating effect is undesirable, the situation that underflow " runs thick " often can occur, and single cyclone treating capacity is not high, and the Coal Slurry in Preparation Plant amount of general production capacity is all larger, this just causes when selecting this equipment, and quantity is often more, and running power is large, investment is large, is not suitable for whole black waters in the system are directly carried out sorting process; Spiral at home steam coal separation field is comparatively commonly used, the method separating density is higher, be difficult to realize low-density sorting, limited the development of the method in the coking coal field, and need more auxiliary equipment in the method actual production, factory building height is had certain requirement, amount of investment is larger, in the application of reality, can be subjected to equally the restriction of fund.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can reach the coal preparation plant's slime separation process of simplifying, reduce equipment investment, reduce the purpose of sorting cost, and the whole low concentration black waters of coal preparation plant are carried out the system of direct sorting process.
Another object of the present invention provides a kind of method for separating of realizing described separation of coarse slime.
Technical scheme of the present invention is summarized as follows:
A kind of separation of coarse slime of the present invention system, it comprises hydraulic sorting device, feed pump, water-only cyclone, dewater unit, flotation unit, the feeding mouth of described feed pump is connected with the apex of described hydraulic sorting device by pipeline, the discharge gate of described feed pump is connected with the feeding mouth of described water-only cyclone by pipeline, the overfall of described water-only cyclone is connected with the feeding mouth of described dewater unit by pipeline, the overfall of described hydraulic sorting device also is connected with the feeding mouth of described dewater unit by pipeline, the underflow of described dewater unit is connected with the feeding mouth of flotation unit by pipeline, and the underflow of described water-only cyclone also is connected with the feeding mouth of flotation unit by pipeline.
Concentrate cyclone and concentrated feed pump before described dewater unit, have been increased in the system, the feeding mouth of described concentrated feed pump by pipeline and described hydraulic sorting device be connected the overfall of water-only cyclone and be connected, the discharge gate of described concentrated feed pump is connected with the feeding mouth of described concentrate cyclone by pipeline, the underflow opening of described concentrate cyclone is connected with the feeding mouth of described dewater unit by pipeline, and the overflow of described concentrate cyclone is connected with the feeding mouth of flotation unit by pipeline.
Increased grading plant in the system between the underflow opening of described water-only cyclone and flotation unit, the underflow of described grading plant is connected with the feeding mouth of flotation unit by pipeline.
A kind of separation of coarse slime method of the present invention, comprise waterpower method for separating and water-only cyclone method for separating, it is characterized in that: with described hydraulic sorting device the low concentration black water is roughly selected first, its overflow is smart product, again the concentrated underflow of described hydraulic sorting device with described water-only cyclone sorting, the overflow of described water-only cyclone is smart product, and the underflow of described water-only cyclone is product from failing.
The treating capacity of described water-only cyclone is 1/2nd to 1/3rd of total treating capacity.
The material size of applicable coarse slime is the 0.3-5 millimeter.
Compared with the prior art the present invention has fully shown following advantage:
(1) realized the direct processing of whole low concentration black waters, be not subjected to the restriction of pan feeding concentration, do not needed black water is carried out in advance concentration.
(2) system has reduced number of devices, has reduced factory building height, has reduced coal preparation plant's input.
(3) system's operation general power reduces greatly, has saved electric energy, and the washing cost is reduced.
(4) system is simpler, reliable operation, and maintenance reduces.
Adopt separation of coarse slime system of the present invention and method for separating, when realizing the separation of coarse slime purpose, can greatly simplify system, reduce the construction of coal preparation plant investment, and in coal preparation plant's running, can reduce power consumption, realize the reduction of coal separation cost, be adapted to especially in the coal jigging method, use.
Description of drawings
Fig. 1 represents the schematic diagram of a kind of separation of coarse slime system
Fig. 2 represents the schematic diagram of another kind of separation of coarse slime system
Fig. 3 represents the schematic diagram of the third separation of coarse slime system
Among the figure:
1. hydraulic sorting device, 2. feed pump, 3. water-only cyclone, 4. dewater unit, 5. concentrated feed pump, 6. concentrate cyclone, 7. grading plant, 8. flotation unit.
The specific embodiment
Embodiment 1, among Fig. 1, a kind of separation of coarse slime of the present invention system, it comprises hydraulic sorting device 1, feed pump 2, water-only cyclone 3, dewater unit 4, flotation unit 8, the feeding mouth of wherein said feed pump 2 is connected by the apex of pipeline with described hydraulic sorting device 1, the discharge gate of described feed pump 2 is connected by the feeding mouth of pipeline with described water-only cyclone 3, the overfall of described water-only cyclone 3 is connected by the feeding mouth of pipeline with described dewater unit 4, the overfall of described hydraulic sorting device 1 also is connected with the feeding mouth of described dewater unit 4 by pipeline, the underflow opening of described dewater unit 4 is connected by the feeding mouth of pipeline with described flotation unit 8, and the underflow opening of described water-only cyclone 3 is connected by the feeding mouth of pipeline with described flotation unit 8.Described hydraulic sorting device 1 can be a kind of in the routine techniques such as hole, concentrated funnel of dragging for of the prior art, can also be other equivalent substitution technology and product.Described dewater unit 4 can be sieve bend of the prior art, straight line shaker, circle shake sieve, electromagnetic sieve etc., can be a kind of in the routine techniques such as centrifugal dehydrator, can also be other equivalent substitution technology and product.
During present embodiment work, hydraulic sorting device 1 as described in all low concentration black water (such as the lower black water of Jig clean coal sieve) directly enters, in hydraulic sorting device 1, finish for the first time primary election, the cleaned coal of for the first time primary election (light product) and most of water are discharged from the overfall of described hydraulic sorting device 1, through connecting pipe, enter dehydration the described dewater unit 4 from the feeding mouth of described dewater unit 4; The tail coal of for the first time primary election (heavy product) and another part water are discharged from the underflow opening of described hydraulic sorting device 1, through described feed pump 2, enter described water-only cyclone 3 by described water-only cyclone 3 feeding mouths and carry out secondary sorting, cleaned coal behind the secondary sorting and part water are discharged from described water-only cyclone 3 overfalls, through connecting pipe, enter dehydration the described dewater unit 4 from the feeding mouth of described dewater unit 4; The sieve that described dewater unit 4 dehydrations obtain is top grade to be thick head coal product, black water under the sieve that described dewater unit 4 dehydrations obtain, discharge from described dewater unit 4 underflow openings, through connecting pipe, the feeding mouth by described flotation unit 8 enters in the described flotation unit 8 and carries out flotation; Tail coal behind the secondary sorting (heavy product) and part water are discharged from described water-only cyclone 3 underflow openings, and through connecting pipe, also the feeding mouth by described flotation unit 8 enters in the described flotation unit 8 and carries out flotation; Thereby finish the sorting work of whole low concentration black waters.
Embodiment 2, in Fig. 2, and another kind of separation of coarse slime of the present invention system, the shape of wherein said hydraulic sorting device 1, feed pump 2, water-only cyclone 3, dewater unit 4, flotation unit 8, structure, material therefor, effect etc. are as described in Example 1.Difference is to have increased concentrate cyclone 6 and concentrated feed pump 5 in the system before described dewater unit 4, the feeding mouth of described concentrated feed pump 5 by pipeline and described hydraulic sorting device 1 be connected the overfall of water-only cyclone 3 and be connected, the discharge gate of described concentrated feed pump 5 is connected by the feeding mouth of pipeline with described concentrate cyclone 6, the underflow opening of described concentrate cyclone 6 is connected by the feeding mouth of pipeline with described dewater unit 4, and the overfall of described concentrate cyclone 6 is connected by the feeding mouth of pipeline with described flotation unit 8.
During present embodiment work, job step, method, principle etc. are as described in Example 1, difference is by concentrated feed pump 5 and the concentrate cyclone 6 of installing the pan feeding of described dewater unit 4 to be concentrated, concentrated underflow out enters described dewater unit 4, and the concentrated overflow that obtains directly enters in the described flotation unit 8 carries out flotation.The result who does has like this reduced the treating capacity of described dewater unit 4, can reach goal of the invention equally.
Embodiment 3, in Fig. 3, the third separation of coarse slime system, the shape of wherein said hydraulic sorting device 1, feed pump 2, water-only cyclone 3, dewater unit 4, concentrated feed pump 5, concentrate cyclone 6, flotation unit 8, structure, material therefor, effect etc. are as described in Example 2.Difference is to have increased grading plant 7 in the system between the underflow opening of described water-only cyclone 3 and flotation unit 8, and the underflow of described grading plant 7 is connected by the feeding mouth of pipeline with described flotation unit 8.Described grading plant 7 can be shake a kind of in the routine techniques such as sieve, electromagnetic sieve of sieve bend of the prior art, straight line shaker, circle, can also be other equivalent substitution technology and product.
During present embodiment work, job step, method, principle etc. are as described in Example 2, difference is the described grading plant 7 by installing, the coarse granule of size in the underflow opening of described water-only cyclone 3 greater than 0.5mm reclaimed, assurance enters in the material of flotation and is not with bulky grain, and be not with the chats product in the mine tailing, can reach goal of the invention equally.
A kind of separation of coarse slime method of the present invention, comprise waterpower method for separating and water-only cyclone method for separating, wherein the method carries out roughly selecting with 1 pair of low concentration black water of described hydraulic sorting device first the first time, the more concentrated underflow of described hydraulic sorting device 1 is carried out secondary sorting with described water-only cyclone 3; For the first time roughly selecting the overflow that obtains is head coal product, and roughly selecting the underflow that obtains for the first time is the chats product; The overflow that for the second time sorting obtains is for also being head coal product, and the underflow that for the second time sorting obtains is product from failing; The overflow that is described water-only cyclone 3 is smart product, and the underflow of described water-only cyclone 3 is product from failing.
A kind of separation of coarse slime method provided by the invention, the treating capacity of wherein said water-only cyclone 3 are 1/2nd to 1/3rd of total treating capacity.
A kind of separation of coarse slime method provided by the invention, wherein the material size of applicable coarse slime is the 0.3-5 millimeter.
The invention discloses a kind of separation of coarse slime system and method for separating; although more than enumerated less embodiment; but for those of ordinary skill in the art; some remodeling that the present invention is done, improvement, replacement etc.; perhaps above-mentioned embodiment is done any combination variation, all drops within protection scope of the present invention.
Claims (6)
1. separation of coarse slime system, it comprises hydraulic sorting device, feed pump, water-only cyclone, dewater unit, flotation unit, the feeding mouth that it is characterized in that described feed pump is connected with the apex of described hydraulic sorting device by pipeline, the discharge gate of described feed pump is connected with the feeding mouth of described water-only cyclone by pipeline, the overfall of described water-only cyclone is connected with the feeding mouth of described dewater unit by pipeline, the overfall of described hydraulic sorting device also is connected with the feeding mouth of described dewater unit by pipeline, the underflow of described dewater unit is connected with the feeding mouth of flotation unit by pipeline, and the underflow of described water-only cyclone also is connected with the feeding mouth of flotation unit by pipeline.
2. a kind of separation of coarse slime as claimed in claim 1 system, it is characterized in that before described dewater unit, having increased in the system concentrate cyclone and concentrated feed pump, the feeding mouth of described concentrated feed pump by pipeline and described hydraulic sorting device be connected the overfall of water-only cyclone and be connected, the discharge gate of described concentrated feed pump is connected with the feeding mouth of described concentrate cyclone by pipeline, the underflow opening of described concentrate cyclone is connected with the feeding mouth of described dewater unit by pipeline, and the overflow of described concentrate cyclone is connected with the feeding mouth of flotation unit by pipeline.
3. a kind of separation of coarse slime as claimed in claim 1 system is characterized in that in the system having increased grading plant between the underflow opening of described water-only cyclone and flotation unit, and the underflow of described grading plant is connected with the feeding mouth of flotation unit by pipeline.
4. separation of coarse slime method, comprise waterpower method for separating and water-only cyclone method for separating, it is characterized in that: with described hydraulic sorting device the low concentration black water is roughly selected first, its overflow is smart product, again the concentrated underflow of described hydraulic sorting device with described water-only cyclone sorting, the overflow of described water-only cyclone is smart product, and the underflow of described water-only cyclone is product from failing.
5. a kind of separation of coarse slime method as claimed in claim 4, it is characterized in that: the treating capacity of described water-only cyclone is 1/2nd to 1/3rd of total treating capacity.
6. a kind of separation of coarse slime method as claimed in claim 5 is characterized in that: the material size of applicable coarse slime is the 0.3-5 millimeter.
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| CN104741214A (en) * | 2015-04-01 | 2015-07-01 | 唐山森普工程设计有限公司 | System and method for preparing pulverized coal fuel of pulverized-coal boiler by using coal washing tailings |
| CN105126991A (en) * | 2015-07-23 | 2015-12-09 | 金易通科技(北京)股份有限公司 | Main washing technology of coal |
| CN106824511A (en) * | 2017-04-10 | 2017-06-13 | 内蒙古广纳煤业（集团）有限责任公司 | Dense-medium separation method |
| CN112371324A (en) * | 2020-09-21 | 2021-02-19 | 新汶矿业集团有限责任公司洗煤分公司 | Efficient coarse slime separation process |
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| CN104741214A (en) * | 2015-04-01 | 2015-07-01 | 唐山森普工程设计有限公司 | System and method for preparing pulverized coal fuel of pulverized-coal boiler by using coal washing tailings |
| CN105126991A (en) * | 2015-07-23 | 2015-12-09 | 金易通科技(北京)股份有限公司 | Main washing technology of coal |
| CN106824511A (en) * | 2017-04-10 | 2017-06-13 | 内蒙古广纳煤业（集团）有限责任公司 | Dense-medium separation method |
| CN112371324A (en) * | 2020-09-21 | 2021-02-19 | 新汶矿业集团有限责任公司洗煤分公司 | Efficient coarse slime separation process |
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